Milk-alkali syndrome
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Milk-alkali syndrome (MAS), also referred to as calcium-alkali syndrome, is the third most common cause of hypercalcemia.[2][3] Milk-alkali syndrome is characterized by elevated blood calcium levels, metabolic alkalosis, and acute kidney injury.[4]
Milk-alkali syndrome | |
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Other names | Calcium-alkali syndrome[1] |
Symptoms | Vertigo, confusion, apathy, nausea and vomiting, anorexia, tremors, psychosis, myalgia, polyuria, renal calcifications, and pruitus. |
Complications | Renal failure, death. |
Causes | Intake of large amounts of calcium and absorbable alkali. |
Risk factors | Older age; acute and chronic renal failure; bulimia nervosa; use of certain drugs such as thiazide, NSAIDs, and ACE inhibitors. |
Diagnostic method | Based on physical symptoms, laboratory findings, ECG, and X-ray (to exclude other causes of hypercalcemia). |
Differential diagnosis | Other disorders that can cause hypercalcemia such as: hyperparathyroidism, malignancies, hyperthyroidism, sarcoidosis, and other malignancies. |
Prevention | Decrease calcium intake (1.2-1.5 g/daily for individuals with risk factors for MAS). |
Treatment | Withdrawal of the offending agent, hydration, hemodialysis (in extreme cases). |
Milk-alkali syndrome can be caused by the excessive intake of calcium and absorbable alkali. Sources of calcium and alkali include dietary supplements taken for the prevention of osteoporosis or hyperparathyroidism and antacids taken for peptic ulcer disease.[5] Common acute symptoms of milk-alkali syndrome include nausea and vomiting, dry mouth, confusion, lethargy, and distaste for milk.[3][4][6] If left untreated, milk-alkali syndrome may lead to kidney failure or even death.[5][7]